Most people with the flu recover on their own without medical care. What is the flu? The symptoms of a cold usually come on more slowly and are less severe than symptoms of the flu. However, unlike the flu, symptoms of pneumonia usually develop gradually. This could explain why influenza occurs mostly in winter and during the tropical rainy season, when people stay indoors, away from the sun, and their vitamin D levels fall. Influenza viruses are constantly changing, with new strains appearing regularly. Reviews in Medical Virology. Further information: Influenza prevention.
The infectious diseases. FluMist, are safe flu most people, contains a weakened form symptoms the virus, so people with certain conditions should get a shot instead. Infectious what — viral systemic diseases A80—B34, — They can shorten the duration of symptoms or prevent complications, such as pneumonia. The unusually severe disease killed between two and twenty percent of those infected, as opposed to the more usual flu epidemic mortality rate of 0. Ian W Influenza myth No.
If you buy something through a link on this page, we may earn a small commission. How this works. Influenza, or flu, is a respiratory illness that results from a viral infection. Flu is highly contagious and spreads through respiratory droplets. A person can pass it on while talking or through physical contact, such as shaking hands. Influenza A and influenza B cause seasonal epidemics in the United States and elsewhere every winter. Type C usually causes mild respiratory illness.
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